import 'dart:io';

import 'package:flutter/material.dart';
import 'dart:async';

import 'package:flutter/services.dart';
import 'package:flutter_background_service_ohos/flutter_background_service_ohos.dart';
import 'package:flutter_local_notifications/flutter_local_notifications.dart';
import 'package:device_info_plus/device_info_plus.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await initializeService();
  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

final FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
    FlutterLocalNotificationsPlugin();

Future<void> initializeService() async {
  if (Platform.isOhos) {
    await flutterLocalNotificationsPlugin.initialize(
      const InitializationSettings(
        ohos: OhosInitializationSettings(''),
      ),
    );
  }
}

class _MyAppState extends State<MyApp> {
  String _platformVersion = 'Unknown';
  String _deviceInfo = 'Unknown';
  final _flutterBackgroundServiceOhosPlugin = FlutterBackgroundServiceOhos();
  final deviceInfo = DeviceInfoPlugin();
  @override
  void initState() {
    super.initState();
    initPlatformState();
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String platformVersion;
    String deviceInfomation = '';
    // Platform messages may fail, so we use a try/catch PlatformException.
    // We also handle the message potentially returning null.
    try {
      platformVersion =
          await _flutterBackgroundServiceOhosPlugin.getPlatformVersion() ??
              'Unknown platform version';
      if (Platform.isOhos) {
        final info = await deviceInfo.ohosInfo;
        deviceInfomation = info.marketName ?? 'Unknown';
      }
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
      _deviceInfo = 'Failed to get device info.';
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      _platformVersion = platformVersion;
      _deviceInfo = deviceInfomation;
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Center(
            child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text('Running on: $_platformVersion\n'),
            Text('Device Info: $_deviceInfo\n'),
            ElevatedButton(
              onPressed: () async {
                flutterLocalNotificationsPlugin.show(
                  888,
                  'COOL SERVICE',
                  'Awesome ${DateTime.now()}',
                  const NotificationDetails(
                    ohos: OhosNotificationDetails(
                      OhosNotificationSlotType.SERVICE_INFORMATION,
                      icon: '',
                      ongoing: true,
                    ),
                  ),
                );
              },
              child: const Text("handle send notification"),
            ),
          ],
        )),
      ),
    );
  }
}
